Re: composite gadget support

Um...the devices you are referring to when using /sys/bus/sub are the
host controllers, am I right?

So if I am understanding all of this correctly, the host controller
would be telling the gadget what interface/function it needs....

Somehow  I was expecting the gadget (in this case a printer with a nice
GUI) to be able to present different interfaces to the hosts depending
on a user selection from within  (so the gadget would be chosing what
functionality to present at a given moment in time)....it seemed
reasonable...

Please could you confirm that I am in the 'right' track?

Thanks again!
jorge






-----Original Message-----
From: Alan Stern [mailto:[email protected]] 
Sent: 29 October 2007 15:22
To: Ramirez-Ortiz, Jorge
Cc: David Brownell; [email protected]
Subject: Re: [linux-usb-devel] composite gadget support

On Mon, 29 Oct 2007, Ramirez-Ortiz, Jorge wrote:

> Thanks a lot Alan!
> Yes it is multiple configurations -only one configuration installed at
a
> time- I am after.
>  This means that the problem then is between my chair and my keyboard
> which I am used to...
> One last thing if I may, how do I turn configurations on and off? Can
I
> do that at runtime and if I can, based on what?

In Linux you can change configurations by writing the new config value 
to /sys/bus/usb/device/.../bConfigurationValue (where ... is the device 
path).

Alan Stern


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